Written: November 20, 2015
A caravan antenna has to work anywhere in Australia. Therefore it has to work on every channel VHF 6 thru to 12 and every channel UHF 28 thru to 51. That is a lot of different channels – in fact 30!
In addition Both Horizontal and Vertically polarized transmitted signals are used.
Now add to this technical nightmare the transmitter that sends the signal out. They can be Daddy Bear ones (big outputs of signal), Mother Bear ones with medium amounts of output or Baby Bear ones which barely send out enough signal to cover 5 kilometres.
Something not really understood, is an antenna- in a perfect situation – would be designed and made for one channel only. This would give you the best performance, but that is not practical. We would need 5 antennas on our home to cover the 5 basic broadcasters. Channel 2, 7, 9 & 10 and SBS. So we compromise and make one antenna to cover the wanted 5 channels. With digital, each channel can then sub-divide into 3 or 5 programs.
Now a caravan antenna has to be able to work on a total of 30 channels in both a horizontal and vertical plane. Not an easy thing to design and then have function. However, explorer has done this and understand the nature of signal due to their in-depth knowledge of the subject.
We do not sell a product we sell a solution to a technical problem!
A solution to a great Picture almost anywhere you travel in this vast land of ours.
explorer Product Range – it works!
RF Consultant Founder
Wilkgard Technology Group P/L